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Finding the Fourth Proportional to 354,324.20, 531,486.30 and 338,966.60

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Solution

The fourth proportional to 354,324.20, 531,486.30 and 338,966.60 is: 508,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,324.20 : 531,486.30 = 338,966.60 : x
  2. Step 2: Convert to fraction form
    354,324.20/531,486.30 = 338,966.60/x
  3. Step 3: Cross multiply
    354,324.20x = 531,486.30 × 338,966.60
  4. Step 4: Simplify right side
    354,324.20x = 180,156,104,057.58
  5. Step 5: Solve for x
    x = 180,156,104,057.58/354,324.20
  6. Step 6: Final answer
    x = 508,449.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.